# The id of the broker. This must be set to a unique integer for each broker.
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# 节点的ID,必须与其它节点不同
broker.id=0
# Switch to enable topic deletion or not, default value is false
# 选择启用删除主题功能,默认false
delete.topic.enable=true
unclean.leader.election.enable=true
############################# Socket Server Settings #############################
# The address the socket server listens on. It will get the value returned from
# java.net.InetAddress.getCanonicalHostName() if not configured.
# FORMAT:
# listeners = listener_name://host_name:port
# EXAMPLE:
# listeners = PLAINTEXT://your.host.name:9092
# 监听端口及IP
listeners=PLAINTEXT://x.x.x.x:9092
# Hostname and port the broker will advertise to producers and consumers. If not set,
# it uses the value for "listeners" if configured. Otherwise, it will use the value
# returned from java.net.InetAddress.getCanonicalHostName().
#advertised.listeners=PLAINTEXT://your.host.name:9092
# Maps listener names to security protocols, the default is for them to be the same. See the config documentation for more details
#listener.security.protocol.map=PLAINTEXT:PLAINTEXT,SSL:SSL,SASL_PLAINTEXT:SASL_PLAINTEXT,SASL_SSL:SASL_SSL
# The number of threads that the server uses for receiving requests from the network and sending responses to the network
# 接受网络请求的线程数
num.network.threads=6
# The number of threads that the server uses for processing requests, which may include disk I/O
# 进行磁盘IO的线程数
num.io.threads=16
# The send buffer (SO_SNDBUF) used by the socket server
# 套接字服务器使用的发送缓冲区大小
socket.send.buffer.bytes=102400
# The receive buffer (SO_RCVBUF) used by the socket server
# 套接字服务器使用的接收缓冲区大小
socket.receive.buffer.bytes=102400
# The maximum size of a request that the socket server will accept (protection against OOM)
# 单个请求最大能接收的数据量
socket.request.max.bytes=104857600
############################# Log Basics #############################
# A comma seperated list of directories under which to store log files
# 一个逗号分隔的目录列表,用来存储日志文件
log.dirs=/data/kafka-logs
# The default number of log partitions per topic. More partitions allow greater
# parallelism for consumption, but this will also result in more files across
# the brokers.
# 每个主题的日志分区的默认数量。更多的分区允许更大的并行操作,但是它会导致节点产生更多的文件
num.partitions=6
# The number of threads per data directory to be used for log recovery at startup and flushing at shutdown.
# This value is recommended to be increased for installations with data dirs located in RAID array.
# 每个数据目录中的线程数,用于在启动时日志恢复,并在关闭时刷新。
num.recovery.threads.per.data.dir=4
## 是否开启日志压缩
log.cleaner.enable=true
## 是否允许控制器关闭broker ,若是设置为true,会关闭所有在这个broker上的leader,并转移到其他broker
controlled.shutdown.enable=true
#如果unclean.leader.election.enable参数的值为false,那么就意味着非ISR中的副本不能够参与选举,此时无法进行新的选举,此时整个分区处于不可用状态。如果unclean.leader.election.enable参数的值为true,那么可以从非ISR集合中选举follower副本称为新的leader。
unclean.leader.election.enable=false
## 一个topic ,默认分区的replication个数 ,不得大于集群中broker的个数
default.replication.factor=3
## 是否允许自动创建topic ,若是false,就需要通过命令创建topic
auto.create.topics.enable=false
## leader 进行复制的线程数,增大这个数值会增加follower的IO
num.replica.fetchers=2
############################# Internal Topic Settings #############################
# The replication factor for the group metadata internal topics "__consumer_offsets" and "__transaction_state"
# For anything other than development testing, a value greater than 1 is recommended for to ensure availability such as 3.
# 内部主题设置
# 对于除了开发测试之外的其他任何东西,group元数据内部主题的复制因子“__consumer_offsets”和“__transaction_state”,建议值大于1,以确保可用性(如3)。
offsets.topic.replication.factor=3
transaction.state.log.replication.factor=3
transaction.state.log.min.isr=2
############################# Log Flush Policy #############################
# Messages are immediately written to the filesystem but by default we only fsync() to sync
# the OS cache lazily. The following configurations control the flush of data to disk.
# There are a few important trade-offs here:
# 1. Durability: Unflushed data may be lost if you are not using replication.
# 2. Latency: Very large flush intervals may lead to latency spikes when the flush does occur as there will be a lot of data to flush.
# 3. Throughput: The flush is generally the most expensive operation, and a small flush interval may lead to exceessive seeks.
# The settings below allow one to configure the flush policy to flush data after a period of time or
# every N messages (or both). This can be done globally and overridden on a per-topic basis.
# The number of messages to accept before forcing a flush of data to disk
#log.flush.interval.messages=10000
# The maximum amount of time a message can sit in a log before we force a flush
#log.flush.interval.ms=1000
############################# Log Retention Policy #############################
# The following configurations control the disposal of log segments. The policy can
# be set to delete segments after a period of time, or after a given size has accumulated.
# A segment will be deleted whenever *either* of these criteria are met. Deletion always happens
# from the end of the log.
# The minimum age of a log file to be eligible for deletion due to age
# 一个日志的最小存活时间,可以被删除
log.retention.hours=168
# A size-based retention policy for logs. Segments are pruned from the log as long as the remaining
# segments don't drop below log.retention.bytes. Functions independently of log.retention.hours.
#log.retention.bytes=1073741824
# The maximum size of a log segment file. When this size is reached a new log segment will be created.
# 每一个日志段大小的最大值。当到达这个大小时,会生成一个新的片段。
log.segment.bytes=1073741824
# The interval at which log segments are checked to see if they can be deleted according
# to the retention policies
# 检查日志段的时间间隔,看是否可以根据保留策略删除它们
log.retention.check.interval.ms=300000
############################# Zookeeper #############################
# Zookeeper connection string (see zookeeper docs for details).
# This is a comma separated host:port pairs, each corresponding to a zk
# server. e.g. "127.0.0.1:3000,127.0.0.1:3001,127.0.0.1:3002".
# You can also append an optional chroot string to the urls to specify the
# root directory for all kafka znodes.
# Zookeeper连接字符串
# 这是一个以逗号为分割的部分,每一个都匹配一个Zookeeper
# 您还可以将一个可选的chroot字符串附加到url,以指定所有kafka znode的根目录。
zookeeper.connect=192.168.1.235:2181,192.168.1.236:2181,192.168.1.237:2181
# Timeout in ms for connecting to zookeeper
# 连接到Zookeeper的超时时间
zookeeper.connection.timeout.ms=6000
############################# Group Coordinator Settings #############################
# The following configuration specifies the time, in milliseconds, that the GroupCoordinator will delay the initial consumer rebalance.
# The rebalance will be further delayed by the value of group.initial.rebalance.delay.ms as new members join the group, up to a maximum of max.poll.interval.ms.
# The default value for this is 3 seconds.
# We override this to 0 here as it makes for a better out-of-the-box experience for development and testing.
# However, in production environments the default value of 3 seconds is more suitable as this will help to avoid unnecessary, and potentially expensive, rebalances during application startup.
#让coordinator推迟空消费组接收到成员加入请求后本应立即开启的rebalance
group.initial.rebalance.delay.ms=3000
分享名称:KakfaServer配置文件的介绍
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